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 7765 Posts Member #: 74 I pick holes in everything.. Chief ancient post excavator |
15th Jul, 2013 at 10:34:22pm
Most exhaust manifolds are round though. Even Mini LCBs.
On 13th Jul, 2012 Ben H said:
Mine gets in the way a bit, but only when it is up. If it is down it does not cause a problem. |
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Site Admin  9407 Posts Member #: 58 455bhp per ton 12 sec 1/4 mile road legal mini Sunny Bridgend, South Wales |
16th Jul, 2013 at 10:54:24am
I had one of these heads fitted to my car when it was a 5 porter. Bloody good head, the chamber shape was err, different, but the ports where done very well. Someone could get a bargain here On 15th May, 2009 TurboDave said:
I think the welsh one has it right! 1st to provide running proof of turbo twinkie in a car and first to run a 1/4 in one!! Is your data backed up?? one extra month free for all Turbo minis members, PM me for detials |
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Site Admin  15300 Posts Member #: 337 Fearless Tom Fenton, Avon Park 2007 & 2008 class D winner & TM legend. |
16th Jul, 2013 at 11:18:32am
On 15th Jul, 2013 stevieturbo said:
On 14th Jul, 2013 Tom Fenton said:
It's easy to sit here now in the internet age where there is loads of info and pictures out there and criticise, but this head was done by heads you win, either mark Haswell or one of his mates, and was on a turbo mini doing the business when some folk on here were still in nappies. Yes things have now moved on but if it wasn't for folk back then trying things to see what worked, we would most likely not be where we are now. Show a bit if respect! How long ago ? I cant see how a bit round open chamber like that would have been deemed an advantage at any stage really ? As for round or square ports, really makes no difference in my book. They maybe had an exhaust manifold with round ports, so round just made more sense. If you check the intake and exhaust ports on an oldish LS, there is nothing round or square about them. If they flow they flow. I think the goal back then would have been to try and get the compression ratio down, 15 and 18cc pistons were just not available then.
On 29th Nov, 2016 madmk1 said:
On 28th Nov, 2016 Rob Gavin said:
I refuse to pay for anything else Like fuel 😂😂 |
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Forum Mod 10980 Posts Member #: 17 ***16*** SouthPark, Colorado |
16th Jul, 2013 at 12:29:41pm
On 16th Jul, 2013 Tom Fenton said:
I think the goal back then would have been to try and get the compression ratio down, 15 and 18cc pistons were just not available then. Well 15cc were - but only the 350quid forged omegas. And that seemed like a huge chunk of money when we were all 10 or 15 years younger - And when the perfectly good 12cc metro turbo pistons were easily available... Edited by turbodave16v on 16th Jul, 2013. On 17th Nov, 2014 Tom Fenton said:
Sorry to say My Herpes are no better Ready to feel Ancient ??? This is 26 years old as of 2022 https://youtu.be/YQQokcoOzeY |
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3594 Posts Member #: 655 Post Whore Northern Ireland |
16th Jul, 2013 at 12:38:44pm
On 16th Jul, 2013 Tom Fenton said:
On 15th Jul, 2013 stevieturbo said:
On 14th Jul, 2013 Tom Fenton said:
It's easy to sit here now in the internet age where there is loads of info and pictures out there and criticise, but this head was done by heads you win, either mark Haswell or one of his mates, and was on a turbo mini doing the business when some folk on here were still in nappies. Yes things have now moved on but if it wasn't for folk back then trying things to see what worked, we would most likely not be where we are now. Show a bit if respect! How long ago ? I cant see how a bit round open chamber like that would have been deemed an advantage at any stage really ? As for round or square ports, really makes no difference in my book. They maybe had an exhaust manifold with round ports, so round just made more sense. If you check the intake and exhaust ports on an oldish LS, there is nothing round or square about them. If they flow they flow. I think the goal back then would have been to try and get the compression ratio down, 15 and 18cc pistons were just not available then. When I did mine 20 years ago, I just whacked the top off the pistons. Not ideal either, but at least it retained the chamber shape in the head. Was easy to drop CR quite a bit, I had mine down around 7.5:1 and that hadnt even impacted on piston crown thickness. Best of all...it cost virtually nothing. Edited by stevieturbo on 16th Jul, 2013. 9.85 @ 145mph
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